I have noticed during the recent hot weather that the temperature gauge has been quite quick to get to working temp (no surprise) but I was wondering if it was worth fitting additional electric fans to the front of the radiator?
The viscous fan seems a bit small to be able to handle the loads when towing etc, any recommendations? QUID FACIUM TIBI
ANTEQUAM ALIIS

2003 TD6 VOGUE Zambezi Silver
tows 2006 Lunar Delta 540/2

Designed by Land Rover to tow a massive trailer across the Sahara desert so you don't need anything extra...ever....

Lot's of folk running without a viscous on the diesel... they run nice and cool....  Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

There is an additional electric fan used for the air con. If the engine coolant temperature increases too much then the electric fan will also step up a speed. It's why the viscous fan can often be ditched in cooler climates with no issues.

Transmission cooling is the usual issue when towing but as Haylands says, with a properly working system it shouldn't be a problem.

As well as the points above, it's important to maintain a good cooling system rather than fiddle with it by adding fans (Not even sure where one would cram them?)

Yes the OAT Coolant can go 5+ years without a change, but for the sake of a few quid, why risk it? I change the coolant immediately when I buy a car and yearly from then. 

See here also

http://www.fullfatrr.com/forum/topic38664.html .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

So it would seem that there is at one job that I wont have to add to the list then.... QUID FACIUM TIBI
ANTEQUAM ALIIS

2003 TD6 VOGUE Zambezi Silver
tows 2006 Lunar Delta 540/2